Scott Patrick Campbell

Holographic storage of multiple high-capacity digital data pages in thick photopolymer systems.

Multiple digital data pages (480 kbits per page) were holographically recorded and retrieved with low bit-error rates in thick (~250- and ~500-mum) photopolymer media. The photopolymer systems were fabricated with the optical quality and low level of scatter required for digital data storage. We believe that these results represent the first demonstration of holographic storage of high-capacity digital data pages in photopolymer media with the thickness that will be required for such storage densities.

High density, high performance optical data storage via volume holography: Viability at last?

The long held promise of using volume holography to deliver high performance optical storage is reviewed. The problems, which limited the development for many years, are accessed. Finally, we describe a series of innovations, which may make the technology viable at last.

Digital holographic data storage in photopolymer systems

We report on the holographic storage and recovery of multiple high capacity (800 X 600, 480 kbit) data pages in 250 micrometer and 500 micrometer thick photopolymer media. The data pages were recovered with raw bit error rates less than 5 X 10-3, the level correctable by current error correction strategies. Our results demonstrate that photopolymer systems can be fabricated with the optical quality and low level of scatter required for digital data storage.

Patterned multiple color polymer light-emitting diodes

Multicolor light-emitting patterns are desirable for full-color displays. We report here a simple method to fabricate patterned polymer light-emitting diodes with multiple colors on one substrate with unpatterned electrodes. This method takes advantage of the concept that light emission can be confined in a certain layer of a multilayer LED device and different color emissions can be obtained through dye doping. By patterning the dye-doped emission layer, we can obtain desired color patterns with unpatterned electrodes. Light-emitting color logos and dots with different colors from the background are demonstrated.